Waterproofing underlayment. Composed of a high tack rubberized asphalt, coated on a non-woven glass fiber mat. Lower surface has a split-release silicone release backing for ease of application. Specifically designed to provide secondary waterproofing protection to shingles as well as prevent ice damage and wind driven rain. Meets ASTM D1970-08 standard and is ICC listed. Self-sealing when penetrated by mechanical fasteners or roofing nails. Fully adhered system prevents lateral moisture migration Self-sealing when penetrated by mechanical fasteners or roofing nails 100 square feet Fully adhered system prevents lateral moisture migration Sand surfaced for slip resistance UL classified class a fire classification under fiberglass, shingles and class C under organic felt shingles
- Brand Name: Henry
- Coverage Area per Package: 100
- Product Type: Self-Adhesive Shingle Underlayment
- Weight per Sheet: 15
- Color: Blue
- Length: 33.3
- Material: Fiberglass
- Width: 3
SHINGLE UNDERLAY3'X33.3'
SDS information: Henry HE740915